1 files changed, 64 insertions, 0 deletions
diff --git a/src/tools/midifile.h b/src/tools/midifile.h
new file mode 100644
index 0000000..6c69df4
--- /dev/null
+++ b/src/tools/midifile.h
@@ -0,0 +1,64 @@
+/* PipeWire
+ *
+ * Copyright © 2020 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+
+#include <spa/utils/defs.h>
+
+struct midi_file;
+
+struct midi_event {
+	uint32_t track;
+	double sec;
+	uint8_t *data;
+	uint32_t size;
+	struct {
+		uint32_t offset;
+		uint32_t size;
+		union {
+			struct {
+				uint32_t uspqn; /* microseconds per quarter note */
+			} tempo;
+		} parsed;
+	} meta;
+};
+
+struct midi_file_info {
+	uint16_t format;
+	uint16_t ntracks;
+	uint16_t division;
+};
+
+struct midi_file *
+midi_file_open(const char *filename, const char *mode, struct midi_file_info *info);
+
+int midi_file_close(struct midi_file *mf);
+
+int midi_file_next_time(struct midi_file *mf, double *sec);
+
+int midi_file_read_event(struct midi_file *mf, struct midi_event *event);
+
+int midi_file_write_event(struct midi_file *mf, const struct midi_event *event);
+
+int midi_file_dump_event(FILE *out, const struct midi_event *event);